BR0011270B1 - Casting mold for the manufacture of a box piston - Google Patents
Casting mold for the manufacture of a box piston Download PDFInfo
- Publication number
- BR0011270B1 BR0011270B1 BRPI0011270-4A BR0011270A BR0011270B1 BR 0011270 B1 BR0011270 B1 BR 0011270B1 BR 0011270 A BR0011270 A BR 0011270A BR 0011270 B1 BR0011270 B1 BR 0011270B1
- Authority
- BR
- Brazil
- Prior art keywords
- region
- piston
- pivotable
- manufacture
- core
- Prior art date
Links
- 238000005266 casting Methods 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000004512 die casting Methods 0.000 claims 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- UFULAYFCSOUIOV-UHFFFAOYSA-N cysteamine Chemical compound NCCS UFULAYFCSOUIOV-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
- B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49249—Piston making
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Mounting Of Bearings Or Others (AREA)
Description
Relatório Descritivo da Patente de Invenção para "MOLDE DE FUNDIÇÃO PARA A FABRICAÇÃO DE UM EMBOLO DE CAIXA". A invenção refere-se a um molde de fundição para fabricação de um êmbolo de caixa com uma região superior, aproximadamente circular- cilíndrica, para alojamento de ao menos duas ranhuras anelares, e uma re- gião inferior, em que se situam os cubos recuados na direção do eixo de pi- no no sentido do eixo longitudinal do êmbolo e com reentrâncias, que estão presentes em direção circunferencial ao menos na região em frente aos cu- bos e que se situam em direção axial na altura da região circular-cilíndrica e em direção radial entre o apoio de cubo e a região circular-cilíndrica, sendo que o molde compreende um núcleo de fundição pivotável e um mandril.Invention Patent Descriptive Report for "CAST FOR THE MANUFACTURE OF A CASH PACK". The invention relates to a casting mold for the manufacture of a housing piston having an approximately circular approximately cylindrical upper region for accommodating at least two annular grooves and a lower region in which the recessed hubs are located. in the direction of the pivot axis in the direction of the longitudinal axis of the piston and with recesses which are present in a circumferential direction at least in the region in front of the cuffs and which lie in the axial direction at the height of the circular-cylindrical region in a radial direction between the hub bearing and the circular-cylindrical region, the mold comprising a pivotable casting core and a mandrel.
Por êmbolo de caixa se entendem aí êmbolos, que apresentam, abaixo de uma região aproximadamente circular cilíndrica alojando os anéis de êmbolo, continuamente um contorno externo, que diverge acentuadamen- te da forma circular, na medida em que os cubos e as paredes de caixa es- tão retraídos na direção do eixo central do êmbolo e apenas ainda na região do lado de pressão e de contrapressão existem segmentos de parede de êmbolo portadores, determinados pelo diâmetro do êmbolo.By box piston is meant pistons having, below a cylindrical approximately circular region housing the piston rings, a continuously contoured outer contour which differs markedly from the circular shape in that the cubes and the casing walls retracted in the direction of the central axis of the piston and only still in the region of the pressure and back pressure side are carrier piston wall segments determined by the diameter of the piston.
Um êmbolo desse tipo é conhecido da US 5.058.489. A fabrica- ção se dá, via de regra, por fundição de uma liga de alumínio em uma coqui- Iha de metal. A reentrância ou fundição vertical entre apoio de cubo e fita anelar (cf. figura 2 do relatório) é produzida por partes de núcleo linearmente deslocáveis. Devido ao deslocamento meramente linear do núcleo, limites são colocados à conformação das reentrâncias e, com isso, também à pos- sível redução de peso do êmbolo. A invenção se ocupa, por conseguinte, com o problema de se possibilitar, em êmbolos de caixa com reentrâncias entre fita anelar e apoio de cubo, uma conformação variável das reentrâncias e se produzir, de ma- neira simples, características de forma determinadas a cada caso na região da parede da caixa.Such a plunger is known from US 5,058,489. The fabrication usually takes place by casting an aluminum alloy into a metal socket. The vertical recess or casting between hub bearing and annular tape (cf. Figure 2 of the report) is produced by linearly displaceable core parts. Due to the merely linear displacement of the core, boundaries are placed on the conformation of the recesses and thereby also the possible weight reduction of the piston. The invention is therefore concerned with the possibility of varying conformation of the recesses in reciprocating reciprocating reciprocating reciprocating reciprocating reciprocating reciprocating plungers and to produce simple shape characteristics for each individual case. case in the region of the box wall.
Esse problema é solucionado por um molde onde o mandril é montado de maneira que pode ser movimentado de modo translatório no núcleo de fundição pivotável para produzir as reentrâncias.This problem is solved by a mold where the mandrel is mounted so that it can be translationally moved on the pivotable casting core to produce the recesses.
Por direção axial se entende aí a direção do eixo longitudinal do êmbolo, por direção radial uma direção perpendicular ao eixo longitudinal.By axial direction there is meant the direction of the longitudinal axis of the piston, by radial direction a direction perpendicular to the longitudinal axis.
Pela pivotabilidade dos machos produtores das reentrâncias se torna possível produzir cortes traseiros, especialmente através das ranhuras anelares, sem que se tenha de proceder à divisão de núcleo para isso até agora necessária em êmbolos. O núcleo de fundição produtor da reentrância deve então ser em uma só peça com o inserto de janela do molde fundição, podendo o núcleo de fundição ser ligável com o inserto de janela ou o inserto de janela e o nú- cleo de fundição produtor da reentrância serem pivotáveis independente- mente entre si ou o inserto de janela ser deslocável apenas linearmente. Por inserto de janela se deve entender aquela parte da coquilha, que forma o êmbolo especial mente na região das paredes de caixa apontando para fora e dos cubos vizinhos.Due to the pivotability of the recess-producing males, it is possible to produce rear cuts, especially through the annular grooves, without the need for core splitting so far required in plungers. The recess-producing casting core should then be in one piece with the window insert of the casting mold, and the casting core may be pluggable with the window insert or window insert and the recess-producing casting core pivot independently of one another or the window insert is displaceable only linearly. By window insert is meant that part of the cup forming the plunger especially in the region of outwardly pointing box walls and neighboring hubs.
Além disso, por correspondente seleção do ponto de pivotamen- to e do ângulo de aperto é possível - na medida em que aberturas redutoras de peso também devam ser produzidas nas paredes da caixa - produzir es- sas aberturas sem emprego de mandris, na medida em que os raios de ar- redondamento são produzidos ao menos na região superior exterior das a- berturas igualmente por insertos de janela pivotáveis. À semelhança de machos linearmente deslocáveis, para a des- moldagem sem problemas da parte fundida é prevista uma chanfradura de aperto ou um ângulo de aperto dependente do ponto de rotação do núcleo de fundição, cuja posição varia, à direção dos machos conhecidos, e cujo tamanho pode igualmente ser localmente distinto. A invenção será mais pormenorizadamente explicada a seguir com base em um exemplo de execução. Mostram: Figura 1 - um êmbolo de caixa fundido com núcleo de fusão pi- votável Figura 2 - a desmoldagem do núcleo pivotável Figura 3 - um corte ao lado dos cubos de pino se estendendo na direção do pino Figura 4 - como figura 3, núcleo de fundição pivotado.Moreover, by corresponding selection of the pivot point and the tightening angle it is possible - as weight-reducing openings must also be made in the housing walls - to produce these openings without the use of chucks as whereas rounding radii are produced at least in the upper outer region of the openings also by pivotable window inserts. As with linearly displaceable taps, a smooth chamfering or tightening angle dependent on the point of rotation of the casting core, the position of which varies with the direction of the known taps, is provided for the smooth disassembly of the cast part. Size may also be locally distinct. The invention will be explained in more detail below based on an exemplary embodiment. They show: Figure 1 - A cast housing piston with rotatable fusion core Figure 2 - Demoulding of the pivotable core Figure 3 - A cut alongside the pin hubs extending in the direction of the pin Figure 4 - As Figure 3, Core pivoting foundry.
Depois da fundição do êmbolo 1, quando da desmoldagem são primeiramente puxados os mandris 2, que produzem aberturas 3 na região do pino de êmbolo. Só depois é que os mandris 2 são totalmente puxados da parte de janela 4 pivotável, podendo esta ser lateral mente dobrada para baixo por pivotamento em torno do ponto de rotação 5 e desmoldada. Em seguida, a coquilha não representada pode ser deslocada. Os machos 6 pa- ra a produção das reentrâncias 7 são parte integrante das partes de janela ou de coquilha 4 pivotáveis e estão ligadas em uma só peça com a mesma. A região de curvatura visível na figura 2, não sombreada, da par- te de janela 4 deixa claro que a reentrância 7 pode se estender por um ângu- lo periférico maior - mesmo mais do que 90° - do êmbolo.After casting of the piston 1, when demolding the mandrels 2 which produce openings 3 in the region of the piston pin are first pulled. Only then are the mandrels 2 fully pulled from the pivotable window portion 4, which can be laterally folded down by pivoting around the pivot point 5 and demolded. Then the unshielded cup can be moved. Males 6 for the production of recesses 7 are an integral part of the pivotable window or sleeve portions 4 and are connected in one piece with it. The region of curvature visible in the unshaded figure 2 of window 4 makes it clear that recess 7 can extend over a larger peripheral angle - even more than 90 ° - of the plunger.
Como se pode ver na figura 3, com as partes de janela 4 pivotá- veis também é possível produzir raios de arredondamento em aberturas 8 por correspondentes contornos 9 na parte de janela 4. Além disso, com as partes de janela 4 pivotáveis é possível produzir na extremidade inferior da parede da caixa um rebordo de reforço 10 por correspondentes contornos 11 da parte de janela 4 pivotável.As can be seen from Figure 3, with the pivotable window portions 4 it is also possible to produce rounding radii in openings 8 by corresponding contours 9 on the window portion 4. Moreover, with the pivotable window portions 4 it is possible to produce at the lower end of the housing wall a reinforcing lip 10 by corresponding contours 11 of the pivotable window portion 4.
Claims (2)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19922809A DE19922809A1 (en) | 1999-05-19 | 1999-05-19 | Casting process used in the production of pistons comprises producing recesses by cores that move on deformation |
DE19922809.4 | 1999-05-19 | ||
PCT/DE2000/000921 WO2000072116A2 (en) | 1999-05-19 | 2000-03-21 | Method for producing a box piston |
Publications (2)
Publication Number | Publication Date |
---|---|
BR0011270A BR0011270A (en) | 2003-07-15 |
BR0011270B1 true BR0011270B1 (en) | 2014-05-27 |
Family
ID=7908416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0011270-4A BR0011270B1 (en) | 1999-05-19 | 2000-03-21 | Casting mold for the manufacture of a box piston |
Country Status (7)
Country | Link |
---|---|
US (1) | US6546993B1 (en) |
EP (1) | EP1218130B1 (en) |
JP (1) | JP4732595B2 (en) |
BR (1) | BR0011270B1 (en) |
DE (2) | DE19922809A1 (en) |
ES (1) | ES2290036T3 (en) |
WO (1) | WO2000072116A2 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60301636T3 (en) | 2002-03-25 | 2010-09-30 | Brp-Powertrain Gmbh & Co Kg | piston |
US7401638B2 (en) * | 2002-03-28 | 2008-07-22 | Delta Electronics, Inc. | Heat-dissipating device and its manufacturing process |
DE10325917A1 (en) | 2003-06-07 | 2005-03-31 | Mahle Gmbh | Piston for an internal combustion engine and casting process for its production |
US7104183B2 (en) * | 2004-07-07 | 2006-09-12 | Karl Schmidt Unisia, Inc. | One-piece steel piston |
US20080128946A1 (en) * | 2005-02-10 | 2008-06-05 | Boye David J | Mold assembly for lightweight pistons |
US20070073674A1 (en) * | 2005-09-26 | 2007-03-29 | Bea Systems, Inc. | System and method for providing federated events for content management systems |
KR101404498B1 (en) | 2006-11-08 | 2014-06-09 | 페더럴-모걸 코오포레이숀 | Piston having twisted skirt panels |
BRPI0810186A2 (en) * | 2007-04-13 | 2014-12-30 | Federal Mogul Powertrain Inc | MOLD ASSEMBLY FOR PISTON FORMING AND METHODS FOR FORMING AND PISTONING. |
DE102008048497A1 (en) | 2008-09-23 | 2010-04-08 | Ks Kolbenschmidt Gmbh | Method for producing a piston of an internal combustion engine with a multi-part slide |
DE102010064078A1 (en) * | 2010-12-23 | 2012-06-28 | Federal-Mogul Nürnberg GmbH | Casting device for a piston for an internal combustion engine and method for opening and / or closing a casting device |
KR102068372B1 (en) | 2012-03-12 | 2020-01-20 | 테네코 인코퍼레이티드 | Engine piston |
US8459332B1 (en) | 2012-07-09 | 2013-06-11 | Kevin M. O'Connor | Piston outer panel mold and method of constructing a piston and forming an undercut cooling gallery of a piston therewith |
KR101615274B1 (en) * | 2015-09-04 | 2016-04-25 | 동양피스톤 주식회사 | eco mold device for producing piston and mold device for producing piston and piston producing method |
KR101634788B1 (en) * | 2015-09-04 | 2016-06-30 | 동양피스톤 주식회사 | eco mold device for producing piston and mold device for producing piston and piston producing method |
SE543272C2 (en) | 2019-03-06 | 2020-11-10 | Husqvarna Ab | Engine piston, engine, hand-held tool, and method of manufacturing an engine piston |
DE102020106059A1 (en) | 2020-03-06 | 2021-09-09 | Bayerische Motoren Werke Aktiengesellschaft | Method for producing a cast component and casting station |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1803301A (en) * | 1929-07-12 | 1931-04-28 | Permold Co | Mold |
GB1543911A (en) * | 1975-05-20 | 1979-04-11 | Ass Eng Ltd | Pistons |
JPH0613138B2 (en) * | 1985-04-26 | 1994-02-23 | マツダ株式会社 | Shell mold for piston |
JP2548035B2 (en) * | 1989-06-07 | 1996-10-30 | 帝国ピストンリング株式会社 | Far infrared radiator |
JPH0310057U (en) * | 1989-06-20 | 1991-01-30 | ||
JPH0739022B2 (en) * | 1991-04-30 | 1995-05-01 | 日信工業株式会社 | Method for forming recess on inner wall of cylinder hole and core for forming recess |
JP3173060B2 (en) * | 1991-09-30 | 2001-06-04 | アイシン精機株式会社 | Method of manufacturing piston for internal combustion engine |
GB2262073B (en) * | 1991-11-29 | 1995-03-29 | Alloy Wheels Int Ltd | Methods and apparatus for manufacturing cast vehicle wheels |
US5289866A (en) * | 1992-12-28 | 1994-03-01 | General Motors Corporation | Piston mold |
JPH07232237A (en) * | 1994-02-25 | 1995-09-05 | Unisia Jecs Corp | Die for piston |
GB9605838D0 (en) * | 1996-03-20 | 1996-05-22 | Perkins Ltd | A method for producing a piston for an internal combustion engine and a piston produced by the method |
JP3189684B2 (en) * | 1996-06-04 | 2001-07-16 | トヨタ自動車株式会社 | Piston casting method |
JP3622445B2 (en) * | 1997-09-29 | 2005-02-23 | 日産自動車株式会社 | Cylinder head manufacturing method for direct injection internal combustion engine |
DE19746102A1 (en) * | 1997-10-17 | 1999-04-22 | Grohe Kg Hans | Pipe fitting production |
-
1999
- 1999-05-19 DE DE19922809A patent/DE19922809A1/en not_active Withdrawn
-
2000
- 2000-03-21 ES ES00930985T patent/ES2290036T3/en not_active Expired - Lifetime
- 2000-03-21 WO PCT/DE2000/000921 patent/WO2000072116A2/en active IP Right Grant
- 2000-03-21 JP JP2000620443A patent/JP4732595B2/en not_active Expired - Lifetime
- 2000-03-21 DE DE50014483T patent/DE50014483D1/en not_active Expired - Lifetime
- 2000-03-21 EP EP00930985A patent/EP1218130B1/en not_active Expired - Lifetime
- 2000-03-21 BR BRPI0011270-4A patent/BR0011270B1/en active IP Right Grant
- 2000-05-21 US US09/979,592 patent/US6546993B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE50014483D1 (en) | 2007-08-23 |
JP4732595B2 (en) | 2011-07-27 |
DE19922809A1 (en) | 2000-11-23 |
JP2003522313A (en) | 2003-07-22 |
EP1218130A2 (en) | 2002-07-03 |
ES2290036T3 (en) | 2008-02-16 |
BR0011270A (en) | 2003-07-15 |
WO2000072116A2 (en) | 2000-11-30 |
WO2000072116A3 (en) | 2002-04-25 |
EP1218130B1 (en) | 2007-07-11 |
US6546993B1 (en) | 2003-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B06A | Patent application procedure suspended [chapter 6.1 patent gazette] | ||
B15K | Others concerning applications: alteration of classification |
Free format text: ALTERADA DE INT.CL.: G06F 1/00. Ipc: B22D 15/02 (2006.01) |
|
B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] |
Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 27/05/2014, OBSERVADAS AS CONDICOES LEGAIS. |